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Liriodenine
Liriodenine is a bio-active isolate of the Chinese medicinal herb ''Zanthoxylum nitidum''. It was isolated for the first time, at least with the name liriodenine, from the heartwood of ''Liriodendron tulipifera'', the common yellow poplar of the south-eastern USA. It is found in very many other plants, notably in ''Annona cherimolia'' and ''Annona muricata'', widely cultivated for their edible fruit. References {{alkaloid-stub Benzylisoquinoline alkaloids Dibenzoquinolines Benzodioxoles Oxygen heterocycles Ketones Heterocyclic compounds with 5 rings ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zanthoxylum Nitidum
''Zanthoxylum nitidum'', commonly known as shiny-leaf prickly-ash, tez-mui (in Assamese) or liang mian zhen (in China), is a species of flowering plant in the family Rutaceae. It is a woody climber with prickles on the branchlets, thick, cone-shaped spines on the trunk and older branches, pinnate leaves with five to nine leaflets, and panicles or racemes of white to pale yellow, male or female flowers in leaf axils and on the ends of branchlets. Description ''Zanthoxylum nitidum'' is a woody climber with curved prickles on the branchlets and thick, cone-shaped spines on the trunk and older branches. The leaves are pinnate, long with five to nine egg-shaped to elliptical leaflets. The leaflets are long and wide, the side leaflets sessile or on a petiolule up to long and the end leaflet on a petiolule long. The flowers are arranged in leaf axils or on the ends of branchlets in panicles or racemes up to long, each flower on a pedicel long. The four sepals are long and t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Benzylisoquinoline Alkaloids
Substitution of the heterocycle isoquinoline at the C1 position by a benzyl group provides 1‑benzylisoquinoline, the most widely examined of the numerous benzylisoquinoline structural isomers. The 1-benzylisoquinoline moiety can be identified within numerous compounds of pharmaceutical interest, such as moxaverine; but most notably it is found within the structures of a wide variety of plant natural products, collectively referred to as benzylisoquinoline alkaloids. This class is exemplified in part by the following compounds: papaverine, noscapine, codeine, morphine, apomorphine, berberine, tubocurarine. Biosynthesis (''S'')- Norcoclaurine (higenamine) has been identified as the central 1-benzyl-tetrahydro-isoquinoline precursor from which numerous complex biosynthetic pathways eventually emerge. These pathways collectively lead to the structurally disparate compounds comprising the broad classification of plant natural products referred to as benzylisoquinoline alkaloids (B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygen Heterocycles
Oxygen is the chemical element with the chemical symbol, symbol O and atomic number 8. It is a member of the chalcogen Group (periodic table), group in the periodic table, a highly Chemical reaction, reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other chemical compound, compounds. Oxygen is Earth's Abundance of the chemical elements, most abundant element, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element chemical bond, bind to form Allotropes of oxygen#Dioxygen, dioxygen, a colorless and odorless diatomic molecule, diatomic gas with the formula . Diatomic oxygen gas currently constitutes 20.95% of the Earth's atmosphere, though this has Geological history of oxygen, changed considerably over long periods of time. Oxygen makes up almost half of the Earth's crust in the form of oxides.Atkins, P.; Jones, L.; Laverman, L. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ketones
In organic chemistry, a ketone is a functional group with the structure R–C(=O)–R', where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group –C(=O)– (which contains a carbon-oxygen double bond C=O). The simplest ketone is acetone (where R and R' is methyl), with the formula . Many ketones are of great importance in biology and in industry. Examples include many sugars (ketoses), many steroids (e.g., testosterone), and the solvent acetone. Nomenclature and etymology The word ''ketone'' is derived from ''Aketon'', an old German word for ''acetone''. According to the rules of IUPAC nomenclature, ketone names are derived by changing the suffix ''-ane'' of the parent alkane to ''-anone''. Typically, the position of the carbonyl group is denoted by a number, but traditional nonsystematic names are still generally used for the most important ketones, for example acetone and benzophenone. These nonsystematic names are considered ret ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
